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LibWeb: Bring CSS line-height implementation closer to spec

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We now distribute the line-height evenly between the space above and
below inline-level boxes. This noticeably improves our baseline
alignment in many cases.

Note that the "vertical-align: <length>" case is quite awkward, as the
extra height added by the offset baseline must count towards the line
box height.

There's a lot of room for improvement here, but this makes the buckets
container on Acid3 show up in the right place, with the right size.
This commit is contained in:
Andreas Kling 2022-03-24 22:45:51 +01:00
parent 430559ea51
commit 195ef5e26f
6 changed files with 79 additions and 9 deletions
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4
Userland/Libraries/LibWeb/Layout/LineBoxFragment.h
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@ -63,6 +63,10 @@ public:
Gfx::FloatRect selection_rect(const Gfx::Font&) const;
float height_of_inline_level_box(FormattingState const&) const;
float top_of_inline_level_box(FormattingState const&) const;
float bottom_of_inline_level_box(FormattingState const&) const;
private:
Node const& m_layout_node;
int m_start { 0 };